Effects of different humic acid doses on some agronomical characteristics and essential oil ratio of coriander (Coriandrum sativum L.) sown on spring and autumn

This study was conducted to investigate the effects of different humic acid doses on some agronomical characteristics and essential oil ratio of coriander (Coriandrum sativum L.) in Yozgat ecological conditions at Research and Application Area of Gedikhasanlı, Faculty of Agriculture, Bozok University during 2015-2016 vegetation period. Two coriander cultıvars (Arslan and Gurbuz) and different humic acid doses (Dose-1: Control, Dose-2: 10 lt/da, Dose-3: 20 lt/da, and Dose4: 30 lt/da) were used in the study. The research was arranged in a split-plots design in random blocks with three replications. Main plots were cultivars and sub plots were humic acid doses. Spring and winter sowings were made on April 17, 2015 and on October 29, 2015, respectively. According the results of this research; the main values in plant height, number of branches per plant, number of umbel per plant, number of seed per umbel, first branch height, a thousand seed weight, biological yield, seed yield, stalk yield, harvest index, essential oil ratio and yield were recorded as 39-77cm, 3-5 number, 5-17 number, 21-52 number, 15-23 cm, 8-16g, 100-590 kg/da, 30-230 kg/da, 60-370 kg/da, %30-75, %0.2-0.5 and 6-80 L/da, respectively. While values obtained from winter sowing are higher than summer sowing, better results were obtained from cv. Arslan and 10 and 20 L/ da humic acid doses.